4 ms·

Strange protocol. Why not pass a path to a file that should be `touch`d and/or written to, I wonder? Would avoid the complexity of sockets.

• Bu9818 3y ago
  Services may be in a different mount namespace from systemd for sandboxing or other reasons (also means you have to worry about filesystem permissions I suppose). Passing an fd from the parent (systemd) is a nice direct channel between the processes
  • NewJazz 3y ago
    But systemd precisely doesn't pass an FD. If it did, you would just need to write() and close().
    • Bu9818 3y ago
      Yeah I was wrong about that, I confused it with socket-activation passing. The systemd-side socket is available from the process.